A quantum phase switch between a single solid-state spin and a photon

被引:1
作者
Sun, Shuo [1 ]
Kim, Hyochul [1 ]
Solomon, Glenn S. [2 ,3 ]
Waks, Edo [1 ]
机构
[1] Univ Maryland, Dept Elect & Comp Engn, Inst Res Elect & Appl Phys, Joint Quantum Inst, College Pk, MD 20742 USA
[2] NIST, Joint Quantum Inst, Gaithersburg, MD 20899 USA
[3] Univ Maryland, Gaithersburg, MD 20899 USA
基金
美国国家科学基金会;
关键词
DOT SPIN; CRYSTAL CAVITY; ATOM; ENTANGLEMENT; NETWORK; QUBIT; GATE;
D O I
10.1038/NNANO.2015.334
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Interactions between single spins and photons are essential for quantum networks and distributed quantum computation. Achieving spin-photon interactions in a solid-state device could enable compact chip-integrated quantum circuits operating at gigahertz bandwidths. Many theoretical works have suggested using spins embedded in nanophotonic structures to attain this high-speed interface. These proposals implement a quantum switch where the spin flips the state of the photon and a photon flips the spin state. However, such a switch has not yet been realized using a solid-state spin system. Here, we report an experimental realization of a spin-photon quantum switch using a single solid-state spin embedded in a nanophotonic cavity. We show that the spin state strongly modulates the polarization of a reflected photon, and a single reflected photon coherently rotates the spin state. These strong spin-photon interactions open up a promising direction for solid-state implementations of high-speed quantum networks and on-chip quantum information processors using nanophotonic devices.
引用
收藏
页码:539 / +
页数:7
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